Electrical distance control.



A. AIGHBLE.

ELECTRICAL msTANGE CONTROL.

APPLICATION FILED SEPTfZ'l, 1909.

Patented May 16, 191.

4 SHEETS-SHEET 1.

1 7 n0g/M517 556275 fame@ A. AICHELB.

ELEGTRIGAL DISTANCE CONTROL. APPLICATION FILED SEPT. 24, 1909.

992,628. Patented May 16, 1911.

4 SHEBTSFSHEET 2.V

A. AIHELE.4 BLEGTBIQAL DISTANCE CONTROL. APPLICATION H1131, gnu?. a4, 190e.

Patented May 16, 1911.

4E SHEETS-SHEET A. AIGHELB` ELBGTRIGAL DISTANCE coNTRoL.-

APPLICATION FILED Sgm. 24, 1909.

Patented May 16, 1911-.

4 SHEETS-SHEET 4.

ALBERT Arcnnnn, or BADEN, SWITZERLAND, neste-Non ro anrinn'cfnsnuscnarr Bitown', novum a om., or BADEN; swrrznmann.yk

ELECTRICAL DISTANCE CONTROL.

ceases;

citizen of Switzerland, and residing atk Wiesenstrasse, Baden, Canton Aargau, Switzerland, have invented a `certain new and useful Improved Electrical Distance Control, of which the following is a specie fication.

The invention controls.

relates to electrical distance- The object of the invention is to provideY an improved form of such devices which shall be lap licable among other ums, to a multiple unit control system for electrically propelled trains and thelike.

The invention includes the novel arrangement of parts and elements hereinafter defy scribed and dened by the appended claims.

In Figure l is illustrated diagrammatically and by way of example an application of the present method to single phasealter# nating current plants. Fig. 2 shows by way of example an accumulator distance control. Fig. 3 shows 'an application of the present invention to three phase circuits.

i Figsfa and 5 show further modifications `transformer 'T byv turning the screwed `spindle U passing through the same. This applicable to valternating current systems;

Fig. @shows a modification applicable for high tension'systems and Fig. 7 indicates an application of the present invention to the.

multiple control of electrically operated vehicles.

Referring to Fig. l, A and B represent the main conductors carrying the current, M is a motor to whose terminals can befapplied various voltages by means of the distant control. An autotransformer T isconnected 'across A and B. Leads are lprovided( at 6 diiferent points of its windings, which terminate in contact piecesnumbered 1 t0 6. Theseileads'are further connected to the contact pieces 1 to 6'. ofthe coni' trolling element'y S, by separate conductorsv 1 to 6. The sliding member, R, can be movedover'the Contact pieces, 1 to- 6 of the rotation`- i's performed vby a small auxiliary Ine-tor, whose rotorE is mounted directly" jon thescrewed spindle U, its exciter windings being connected yto the ,transfo-rm'erfl winding at the pointsl I-I and K.4 The motor' y M which is to be driven at various voltages `by means of the distant control is .connected Specification of Letters Patent. Application mea september 24, iena. serial ne. 519,452. j

apparatus S, through the conductor,

er erica.

p Patented i.;

motor E is connected to the above 'stripV, i

the other.brush-N, being in communication-- with the contactpiece P ofthe controlling; L. 'i In Fig. l the sliding member, R, is showii in contact with the stud, 2.-, Inv this case c the main motor M, is subject to `a Avoltage corresponding to the `studs, 1' and 2. If theA voltage at its terminals is to be increased to that corresponding to the studs -1- and 4, f Y the point P of the controlling element is- .i yconnected with the contact stud 4; for 70 example by suitable adjustment of a` con- Y tact cylinder which is-shown developed inw; the plane ofthe paper inl the drawing. i 'current now flows from the branch 4: of the transformer T through Vthe conductor 4', to? thecontact stud, 4, thence by yway ofthe stud P through the @conductor L to the brushf-N, through the rotor E and the brush A vM to theV strip V and thence through the` lsliding contact member R to the point 2 of the transformer T. The rotor E` of. the auxiliary .motor is thereforein circuit with. the poin'tsQ and lt of the transformerv T, v and' the current passing through. it causes it to rotate insuch adirection y that the sliding contact member R, moves onto the con; tact piece, 4. When this positionis reached-,.1 the rotor E, of the auxiliary motor loses the current and stops.l The motor M,g;is now ,in circuit with the points,` 1 and'tfof1v the transformer T yand receives a correspond# ing voltage. If-t-he contact cylinder of th controlling felementyvb'e now broughtv on to thev point 3 a current will ypass through the rotor E of the auxiliary motor" in the reverse direction, and the latterwill therefore turn in the opposite direction unf` til the sliding member It, reaches'fthecon-, tact piece, 3. Thefinotor M: is now' sulo-v l jected to a yvoltage, ,correspondingf'toa points l and 3.v In this manner the sly, ycontact member, R, automaticallyfffll any adjustment of theflcoiit ing vmember, the meier' Efreceiving'a current L. in-Q- o'ne or the other direction according`as lthen'ew position of the member S is l.'above'f of the's'liding member R lis thereforey'fpeslr 'or' belowvthe previous one. TheV adjustment libre.,

ing parts are lettered similarly to those of Fig. 1 the battery of accumulators B or a part thereof replaces the transformer. One or more cells may be connected to and between each pair of contacts 1 to 1l. A continuous current motorv serves as the auxiliary motor in this case, whose armature E is connected through the brushes M fand N to the strip V, and by way of the conductor L to the Contact P of the controller respectively, its field windings G receiving their current 'from the cells between the points X, Y. That part ol the sliding member, R, resting on the contacts l to l1 is constructed in two parts as is' usual in the case of cell switches, and is provided. with a resistance W. The contacts l to ll of the cell regulator are connected through the conductors, l to 11 to the corresponding contacts, l to 1l of the controller S. The manner in which this arrangement acts is obvious from what has been said regarding that shown in Fig. 1. In order to apply this method to three phase circuits, the arrangement indicated in Fig. 3 can be used. The three phase current is supplied through the conductors A, B, and C. An autotrans- 'ormer is in circuit with each of the latter, whose windings are provided with 6 branches connected to the Contact pieces l to G ineach phase. A sliding member R in each phase nieves over the latter and also rests on a strip V. The conductors N, 0 and. Z lead from these strips to the motor M, Whose terminal voltage is to be regulated troni any desired point by means of the controlling member S. For this purpose the contact pieces l to 6 of the phase C are connected through the conductors l to 6 to the contacts l to 6 of the controlling member S. y

The movement of .the three sliding members R is performed by means of the rotation of the three screwed spindles U which are coupled together' mechanically. They are drivenby the motor E mounted on'the middle spindle. In the present example a two phase induction motor is used the phase G ofwhose stator windings is connected to the point X, Y of the interlinked voltage of the phases A and B, while its other .phase D only receives current while the position ofthe sliding members R does not correspond with the setting of the controlling member. In the. circuit of the phase D of the stator passes through the conductor windings is also connected the coil of an eiectromagnet Q, whose armature interrupts the current ot the phase G of the stator windings at the contact I under the iniuence ot the spring K. This arrangement Operates in the following manner whenever the position of the sliding contact members, `R, which are positively coupled together for all, phases does not correspond to the setting of the controlling member, S, a current L to the phase l) of the stator of the auxiliary motor E, and excites this phase ot the stator as wel] as the el'ectroi'nagnet Q by means of" its coil F. The magnet attracts its armature and thereby closes..the circuit ot' the phase G of the stator. The auxiliary motor therefore works as a two-phase motor and changes the position of the sliding members R until the current ceases to flow in the phase D oi the stator. This takes place when that contact corresponding to the setting of the controller S is reached by the sliding' members R. Thereupon the electromagnet Q releases itsarmature and breaks the current of the phase G in the stator ot' the auxiliary motor Il), so that the latter remains completely cut out', and only comes into operation again after further setting of the controlling ineinber S. A shunt commutator motor for alternating current can also bc used as the auxiliary motor instead of an induction motor. This arrangement is illustrated diagrammaticallyin Fig. 4.-. The corresponding parts have the same reference letters as in Fig. In this case it is preferable not to join the'eld excitation of the auxiliary motor to that phase whose current passes through the rotor of the motor, as in this manner a larger turning moment of the motor can be obtained.

In the present example the exciter windings G are connected at the points X, Y, to the Aphase C, the current for the armature E of the motor being taken from the .phase B. The arrangement and method of operation of this form of the invention obvious from what has been said above regarding Fig. In using this arrangement for alternating current plants, the connections may' also be -carried out with the use of two transformers in such a manner that one of them carries the working current and the other merely the controlling current. Suchl a modifica.-

ion for single phase circuits is illustrated diagrammatically in FiO. 5. The main conductors supplying the current are lettered A and B. An autotransiormer T is connected across these, provided with (3 leads with corresponding contact pieces 1 to (3, connected by conductors 1' to 6 to the corresponding contacts l to G in the controller S. The method ol operation oi" this arrangement is obvious from whathas beenV said with referenceto the'other examples.

IOO

ductors D and F. .pings T of the formerare provided with 6 branches corresponding tol the branches l,

senses TEhe :armature E of the motel? receive current in consequence of the dierence in pressure'vproduced between the .correspond-i 'ing -points 'of the transformer windings T and- To-resulting from a difference in the lsetting ofthe slid' v member R and the controller and disp ace the sliding member by v'rotation of thescrewed spindle toward that contact piece of the transformer T- corresponding to the vsetting ofthe controller S.

In.. applying the present system' to high tensinljplants, the connection between the controlling member S and the member to Abe controlled, can be effected by means of a transformerfT T"connected to the auto.h transformerfT, the high tension current havingfiio access to the member to be'controlled.`

The high tension windings T of the transformer T T. are connected across the ends of the high tension transformer T at..

the points D andvF. by means of the con- The low tension windto .Gioloffthe autotransformers T, and endingfincontact pieces'vl to 6 which are "in connnunication with the corresponding contactsv lf to 6 .of the controlling member,

throughthe conductors l" lto 6. A second sliding member R rigidly connected by meansof an insulating piece l to the sliding; member R `which moves over the contacts' fflogtoo and the strip V, is moved simultaneously with the 'said member -R on rotatiouof the screwed spindle U, over `the contacts l to 6. andthe strip V. The' armature E aswell asthe'exciter windings G of lthe ..auxiliarygmotorare connected to the low tension-.side of the transformer T T The armature-E. is connected through the brush Mtofthe strip V which in turn is in com-- 'municationwith the lowA tension windings ntrough` the sliding memberv lt, and through ,the brush N and the conductory L with; the contact P of the controller.. The

exciterr windings G onthe contrary are con' Anectedto theends of the low tension windthe points Xand Y. The ymethod ofl oper of thisv arrangement is obvious `from1v vhat has been said above with refer? ence 'to i .the first-mentioned example. adjusifrnentk of the sliding members R and R lT2 1ftoinbiried together, is edected by the action.-

The sliding member R.

The

of the diderence of pressure produced be' tween the corresponding lcontacts of the:

transformer windings T by a difference betweenv the setting of the controller S and` 'the position of the sliding member R.

The advantages'which the application of the new system o'ifers, are, especially lap! parentin= applyinglit'tojthe multiple con- 4trol of electrically operated -vehicles. In

this case only a single.` conductor is neces sary for connecting the 'separate vehicles. Fig. 'Z shows by yway of example, an arrange ment for such.y an application of the sys:

tem. 'Two' vehicles F1yand F2 each with two auxiliary motors, nainelyvE1 E2, and E2,

E1 respectively,l and each with two"controllers, namely S1, S2, and'zS3, S2', respectively.

` The working transformers T1, T2, T3, and T11',

provided .with branches and contacts 1 to 5, leach recelve current separately through the trolleys A1, A2, A3, and A4, and are connected in parallel among themselves, the ends'off-the same beingl earthed at K through the conductors K0. All the auxiliary motors are lconnected in parallel among themselves in a similar manner, the brushes M1 M2 `M2 M4 being connected to the common conductor L whichis coupled vat L0 for the two,y The points P1 P2 P2 P2- of all the vehicles. controllers S1 SLS3 S4 respectively are in communlcatlon with one another through The motors M1 M2 of; the vehicles sar `this conductor L. The exciter windings 4 G1 G2 G3 G4 of the auxiliary motors E1 E2 E3 E,1 respectively are connected "to lthe transformers T1 T2 T2 T4 at suitable points."

which are to be controlled arel joined up to the strips V1 V2 V3 V2 on the oneha'nd and are 'earthed at K. through th-e conductors By means ofsuchv an larrangement, any desired number "of B1 B2 B2 B2 respectively.

drivingmotors on any number of vehicles can be positively controlled from one point.

, The method of operation of the arrange'- '1 ment illustrated in Fig. 7 is as follows. Stips pose all the controllers S-1gto S4A are set to their starting positions, so thatlin eachcase brush M and N .of the auxiliary motor connected to the-same are earthedthrough the conductor K0, Thesliding 'members R1 R2" R3 'R2 are. in corresponding positions-on the' contacts 'v 5. lfnow 'by suitable setting of the controller S1,.the' contact 4 be conf `the contact 5 is joined'to the contact P, `that is, the common conductor L and the nected with P1, all the armatures E1, E2, f

and E,1 of the auxiliary motors receive eurrent simultaneously, their brushes'fM1 M2 vM3 M2 being connected through the. common conductor L, the conductor L1, the point P1 and the conductor t tothe contact/l of the transformerT1 while their lbrushes N1' N2 N2 N1 are vin'communication with the contactsv 5 of the transformer through the 'slid' ing members; @The auxiliary.

iso

. spindle U1 U., U3 U4.

motors therefore receive current under the influence of the difference of pressure between the contacts l and 5 of the transformer T, and move the slidingmembers onto the cont-act tby rotation of the screwed As soon as the sliding member It has reached this contact, the corresponding motor loses the current and stops. All the driving motors M, M2 M, MI, of the yehicles coupled together in this manner, being each connected to the strips V1 V2 V 3 V4, recelvea working pressure at their terminals corresponding` to the branch ll of the transformers T1 T2 T1, T4. In this manner the sliding members It, R2 R3 R, on all the transformers follow the movement of the controller S1 so that the working pressure of all the motors can be positively controlled from this single point.

The number of the vehicles to be controlled together can be increased as desired,-

only one connection being required between any two vehicles. The 4 driving motors can of course be controlled from S2, S3 or S.,L as wellas from 8,. rl`he present system can of course be used not only for controlling transformers but also for operating resistances, switches, or any other desired apparatus.

Having now described our invention, what we claim as new and desire to secure by Letters Patent is:

1. In combination, an element to be controlled, a sectional transformer serving said element, contacts connected to the sections of said transformer, an adjustable member to connect any of aforesaid contacts to said element, a master controller, contacts on same, connected to corresponding contacts on said sectional transformer, a motor adjusting device for said adjustable member operated by the closing of contacts on said controller to move said adjustable member into co-action with the corresponding transformer contacts.

2. In combination, a motor, an auto-transformer serving said motor, contacts connected to a plurality of points on sa-id autotransformer, a conductor connected to said motor, an adjustable member connecting any one of said transformer contacts to said conductor, a master controller, contacts onv same connected to the transformer contacts, a screw device for adjusting aforesaid member, and an auxiliary motor operating same and connected to aforesaid conductor and to said controller.

3. A multiple control system for electrically operated vehicles, comprising a plurality of motors, an equal number of autotransformers connected in parallel among themselves, and further each connected to a trolley wire and to earth, contacts connected to a number of points on each of Said auto-transformers, a conductor correspending to each autotransformer and each connected to a corresponding driving motor, an adjustable member coacting with each of said conductors and said contact sets, a controller for each transformer, contacts on said controllers connected to the corresponding transformer contacts, a motor adjusting device for each of aforesaid adjustable members connected to the aforesaid conductor and to the controller.

4L. A distance control system comprising a controlling member and a member to be controlled, contacts on said controlling element, contacts on said controlled element, a plurality of conductors joining said contacts of controlling element to those of the controlled element, an adjusting member adapt-4 of said adjusting member and aforesaid con,A

trolling element.

5. A distance control having a motor, two

lsets of cont-act terminals to which correspondingly variable voltages are supplied, switch arms to engage the respective sets of terminals one of which is operated by the motor in accordance with the direction and extent of manual movement of thevother arm the motor being connected to said motor operated switch, in which the rotor and stator of the motor are electrically distinct; as set forth.

6. In combination an auto-transformer, spaced contacts on said transformer, a master controller, contacts on same respectively connected to transformer contacts, a contact disposed in proximity to said transformer contacts, a switch arm traversing the latter and permanently in connection with aforesaid contact, a motor operator for aforesaid switch arm electrically connected to a contact of said master controller and to aforesaid contact, and having its stator and rotor electrically distinct, as set forth.

7. A multiple control system for electrically operated vehicles comprising a plu- -rality of motors; an equa-l number of current collectors; a conductor with which each of said collectors co-acts; a plurality of autotransformers equal in number t-o the number of motors, and each connected between one of the collectors and a. common return; spaced contacts on each of said auto-transformers; a conductor corresponding to each of said auto-transformers, each motor being connected between one of said conductors and a common return; an adjustable contact member capable of co-acting with each of the spaced contacts and corresponding conductors to effect connection of any of the contacts to the conductor; a master controller corresponding to each of said transformers; contacts on same; connections from each. efrsai contact-s to one of said eeetrca cnneeton connecting al of aforetransforrner contacts; a further Contact on said further contacts. 10 eaeh of said contiollers; a. motor adjusting In testimony whereof, I have aXed my s device for each of said adjustable Contact signature in presence of two Witnesses.

v5 members, the motors of each of which ae ALBERT AICHELE.

electrcaly connected to the corresponding "Witnesses: conductor and to the corresponding 4further CARL FELLSCHMIDT,

contacten the mastencontroller; and an GARLGUBLER. 

